mark all dtors which are virtual because base class dtor is virtual explicitly virtual themselves

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@41020 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/motif/accel.cpp

@@ -28,7 +28,7 @@ class WXDLLEXPORT wxAcceleratorRefData: public wxObjectRefData
     friend class WXDLLEXPORT wxAcceleratorTable;
 public:
     wxAcceleratorRefData();
-    ~wxAcceleratorRefData();
+    virtual ~wxAcceleratorRefData();
 
 public:
     int m_count;